40021055343 has 28 divisors (see below), whose sum is σ = 60335847208. Its totient is φ = 26533208880.

The previous prime is 40021055329. The next prime is 40021055411. The reversal of 40021055343 is 34355012004.

40021055343 is a `hidden beast` number, since 400 + 210 + 5 + 5 + 3 + 43 = 666.

It is not a de Polignac number, because 40021055343 - 2¹² = 40021051247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021055843) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 19705 + ... + 283602.

It is an arithmetic number, because the mean of its divisors is an integer number (2154851686).

Almost surely, 2^40021055343 is an apocalyptic number.

40021055343 is a deficient number, since it is larger than the sum of its proper divisors (20314791865).

40021055343 is an equidigital number, since it uses as much as digits as its factorization.

40021055343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303506 (or 303491 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 40021055343 its reverse (34355012004), we get a palindrome (74376067347).

The spelling of 40021055343 in words is "forty billion, twenty-one million, fifty-five thousand, three hundred forty-three".